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H. R. MILLER HOT WATER HEATING APPARATUS.

No. 556,828. Patented Mal. 24, 1896.

UNITED STATES PATENT EErcE.

HOMER R. MILLER, OF SOUTH FRAMINGHAM, MASAO1IUSETTS, ASSIGNOR OFONE-HALF TO HERBERT E. MILLER, OF SAME PLACE.

HOT-WATER H EATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 556,828, dated March24, 1896.

Application filed July 8,1895. Serial No. 555,225. (No model.)

To all whom it may OOH 06 H: preferably formed with transverse or verti-Be it known that I, HOMER R. MILLER, cal corrugations a, which may bemade in of South Framingham, county of Middlesex, parallelism, ifdesired. Interiorly the pas- State of Massachusetts, have invented an1111- sage a is formed more or less undulating or 5 provement inl-lot-lVaterHeating Apparatus, tortuous-as, for instance, it may beformed of which the following description, in connecin parallelism withthe exterior corrugations. tion with the accompanying drawings, is aThese thin water-receivers a are placed in specification, like lettersand figures on the vertical position side by side and close todrawingsrepresenting like parts. gether, there being suflicient space between 10This invention has for its object to improve them for the passage of theproducts of comthe construction of hot-water heating appabustion, andthey are connected together in ratuses. series by short intermediateconnections 2- In accordance with this invention several that is to say,the upper front end of one rethin water-receivers are placed in verticalpoceiver is connected to the upper front end of sit-ion side by sidequite near together and the one next to it, and the lower rear end ofconnected in series, and the set of water-rethis latter receiver isconnected to the lower ceivers so constructed are provided with an rearend of the next receiver, and so on, thereinletand an outlet connectionor pipe. These by providing a continuous passage for the flow thinwatenreceivers are each preferably made of water through the entire setof receivers.

20 as a single or one piece casting, and their op- To one of the outsidereceivers of the set an posite sides are formed with verticalcorrugainlet-pipe is connected, and to the other outtions which augmentthe heatin -surface and side receiver an outlet-pipe is connected, saidform fines or passage-ways for the products pipes being connected incircuit with the cirof combustion which pass up between the culatorysystem.

25 receivers. Interiorly these thin water re- The front ends of thewater-receivers have ceivers are formed with an undulating or torformedupon them suitable lugs to, which tuous passage therethrough from end toend rest on supports a secured in the masonry, which retards theprogress or flow of the waand thereby supporting the front ends of theter. This tortuous passage may and preferreceivers, and the rearendsthereof rest upon 0 ably will be formed in parallelism with the rollersor other suitable supports which may exterior corrugations, and inaddition to rebe provided for them. tarding the circulation at suchpoint provides The lower front end of the receivers are as much exposedwater-surface as fire-sun formed obliquely, as shown in Fig. 2, so asface. Supports are provided for. the front to present an unobstructedpassage through 3 5 and rear ends of these thin water-receivers, thefire-pot A. and bymeans of the intermediate connections The set of thinwater-receivers a are placed by which they are connected in series aresejust above the fire-pot, or between it and the eurely held in Verticalposition on their supoutlet for the products of combustion, and ports.The lower front end of these thin wathe exterior corrugations formvertical fines 4o tor-receivers are formed more or less obliquely orpassages for the products of combustion,

to present an unobstructed passage to the firein addition to providinggreater heating-surpot above which they are placed. face, while theinterior undulating or tortu- Figure 1 shows in plan view and partialsecous passage retards the flow of water through tion a hot-waterheating apparatus embodythe set of receivers that it may be heated toing my invention, and Fig. 2 a side elevation a greater temperature. 5of the same. I clai1n- The thinwater-receivers a, six being herein 1. Ina water-heating apparatus, the thin shown, are or may be made as aone-piece water-receivers a arranged side by side, and casting of anysuitable length and height, but connected together in series asdescribed, the 5o verythin. Exteriorlytheir opposite sides areconnections at one end being near the top and at the opposite end nearthe bottom, and the inlet and outlet connections, substantially asdescribed.

2. In a water-heating apparatus, the thin Water-receivers a arrangedside by side, short intermediate connections 2 connecting one end of onereceiver to the corresponding end of the next one, and connecting theopposite end of this latter receiver to the corresponding end of thenext one, and so on as shown, the connections at one end of the receiverbeing near the top and at the opposite end near the bottom, and theinlet and outlet connec tions, substantially as described.

3. In a water-heating apparatus, the thin water-receivers o, havingtheir interior passage a formed with corrugated sides, arranged inparallelism and at an angle to the course of the Water therethrough, tothereby provide an undulating passage for the water, of the same widthfrom end to end, and the inlet and outlet connections, substantially asdescribed.

4:- In a water heating apparatus, the thin water-receivers (1, arrangedside by side, connected together in series, having their exterior sidescorrugated vertically and in. parallelism, and their interior corrugatedin parallelism with said exterior corrugations, and the inlet and outletconnections, substantially as described.

5. In a Water-heating apparatus, the Waterreceivers a, arranged side byside, connected together in series as described, having lugs at theirforward ends resting on supports secured in the masonry, and their backends supported on rollers, and the inlet and outlet connections,substantially as described.

In testimony whereof I have signed in v name to this specification inthe presence of two subscribing witnesses.

HOMER R. MILLER.

